EOS Rvs A7S II
Canon
EOS R (2018)
From £799
Best for Entry to full-frame mirrorless & RF lens exploration
View EOS R
VS
Sony
A7S II (2015)
From £799
Best for Low-light video, documentary & available-light filmmaking
View A7S II
Which should you buy?
Entry To Full-Frame Mirrorless & Rf Lens Exploration — EOS R (2018): The RF mount's founding camera — 30MP, Dual Pixel CMOS AF, and the proof-of-concept that launched Canon's mirrorless era.
Low-Light Video, Documentary & Available-Light Filmmaking — A7S II (2015): A landmark in mirrorless history — the first Sony with IBIS and internal 4K, its low-light video capability still impresses today at a used-market price.
Who should buy what
EOS R (2018)
- Canon DSLR users wanting to enter the RF ecosystem at the lowest full-frame price
- EF lens collectors who want an affordable RF body to use with the EF-RF adapter
- Photographers stepping up from APS-C who want full-frame quality on a budget
- RF system fans who want a second body without full EOS R6 pricing
A7S II (2015)
- Filmmakers and videographers who want legendary low-light performance at a used-price discount
- Documentary shooters working in unpredictable available light conditions
- A7S III shooters who want a second Sony FE body for backup or B-camera use
- Budget-conscious video producers who want full-frame 4K with S-Log at an accessible price
Quick take: The eos r has the highest resolution at 30mp. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R (2018) | A7S II (2015) |
|---|---|---|
| Price | £799 | £799 |
| Sensor | 30.3MP full-frame CMOS | 12.1MP full-frame BSI Exmor CMOS |
| Resolution | 30.3MP | 12.1MP |
| Video | 4K/30p (1.7× crop), 1080p/60p | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 |
| Autofocus | Dual Pixel CMOS AF — 5655 AF areas, Eye AF | 169 phase-detect + 25 contrast AF — limited by modern standards |
| Stabilisation | None | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) |
| Burst Rate | 8fps continuous (5fps with AF/AE) | 5fps continuous |
| Battery Life | ~350 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 660g body only | 584g body only |
| Dimensions | 135.8 × 98.3 × 84.4mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.71× magnification | EVF, 2.36M dots, 0.71× magnification |
| Screen | 3.0" touchscreen, tilting | 3.0" tilting LCD, 1.23M dots |
| Mount | Canon RF mount (full-frame) | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-II slot | Dual SD UHS-I slots |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack | USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | EOS R | A7S II |
|---|---|---|
| Portrait | ||
| Landscape | — | |
| Travel | — | |
| Wedding | ||
| Vlogging & Video | ||
| Sports | ||
| Low Light | — | |
| Street | — |
More comparisons with EOS R
Camera family history